This book is an investigative special that takes the world's most well-known mysteries and challenges everything we know about them. Including in this -Prehistoric civilizations -Egyptian pyramids and the theory of concrete blocks -Ancient secret of Egypt -Trepanation of the skull in the ancient world -Ancient underground structures -Mysteries of Puma Punku -Riddle of Lake Titicaca -The magic of ancient artifacts -New crystal skull mysteries -Unknown pra-civilization -Dog-headers -The Last Secret of Easter Island -Hopi Indians and Orion Stars -New finds of lost civilizations - a forgotten civilization -Dogon knowledge -And much more.